metallic vs bimetallic

metallic is a noun but bimetallic is not a noun.

Word	Noun	Adjective	Verb	Adverb
metallic	Yes	Yes	No	No
bimetallic	No	Yes	No	No

metallic (noun)	bimetallic (noun)
a yarn made partly or entirely of metal
a fabric made of a yarn that is partly or entirely of metal

metallic (adjective)	bimetallic (adjective)
containing or made of or resembling or characteristic of a metal	pertaining to a monetary system based on two metals
	formed of two different metals or alloys; especially in sheets bonded together